scholarly journals Ketamine Blunts Sympathetic Nerve Activity Responses to a Cold Pressor test

2019 ◽  
Vol 33 (S1) ◽  
Author(s):  
Gilbert Moralez ◽  
Mu Huang ◽  
Matthew N Cramer ◽  
Joseph M Hendrix ◽  
Carmen Hinojosa‐Laborde ◽  
...  
Hypertension ◽  
1987 ◽  
Vol 9 (5) ◽  
pp. 429-436 ◽  
Author(s):  
R G Victor ◽  
W N Leimbach ◽  
D R Seals ◽  
B G Wallin ◽  
A L Mark

2002 ◽  
Vol 282 (5) ◽  
pp. H1717-H1723 ◽  
Author(s):  
Jian Cui ◽  
Thad E. Wilson ◽  
Craig G. Crandall

The purpose of this project was to test the hypothesis that baroreceptor modulation of muscle sympathetic nerve activity (MSNA) and heart rate is altered during the cold pressor test. Ten subjects were exposed to a cold pressor test by immersing a hand in ice water for 3 min while arterial blood pressure, heart rate, and MSNA were recorded. During the second and third minute of the cold pressor test, blood pressure was lowered and then raised by intravenous bolus infusions of sodium nitroprusside and phenylephrine HCl, respectively. The slope of the relationship between MSNA and diastolic blood pressure was more negative ( P < 0.005) during the cold pressor test (−244.9 ± 26.3 units · beat−1 · mmHg−1) when compared with control conditions (−138.8 ± 18.6 units · beat−1 · mmHg−1), whereas no significant change in the slope of the relationship between heart rate and systolic blood pressure was observed. These data suggest that baroreceptors remain capable of modulating MSNA and heart rate during a cold pressor test; however, the sensitivity of baroreflex modulation of MSNA is elevated without altering the sensitivity of baroreflex control of heart rate.


Stroke ◽  
1998 ◽  
Vol 29 (3) ◽  
pp. 607-612 ◽  
Author(s):  
Takashi Mizushima ◽  
Fumihiro Tajima ◽  
Takeshi Nakamura ◽  
Mitsuru Yamamoto ◽  
Kyu-Ha Lee ◽  
...  

Hypertension ◽  
2015 ◽  
Vol 66 (4) ◽  
pp. 858-864 ◽  
Author(s):  
Charlotte W. Usselman ◽  
Paige K. Wakefield ◽  
Rachel J. Skow ◽  
Michael K. Stickland ◽  
Radha S. Chari ◽  
...  

2019 ◽  
Vol 121 (4) ◽  
pp. 1183-1194 ◽  
Author(s):  
Jason R. Carter

The technique of microneurography has advanced the field of neuroscience for the past 50 years. While there have been a number of reviews on microneurography, this paper takes an objective approach to exploring the impact of microneurography studies. Briefly, Web of Science (Thomson Reuters) was used to identify the highest citation articles over the past 50 years, and key findings are presented in a decade-by-decade highlight. This includes the establishment of microneurography in the 1960s, the acceleration of the technique by Gunnar Wallin in the 1970s, the international collaborations of the 1980s and 1990s, and finally the highest impact studies from 2000 to present. This journey through 50 years of microneurographic research related to peripheral sympathetic nerve activity includes a historical context for several of the laboratory interventions commonly used today (e.g., cold pressor test, mental stress, lower body negative pressure, isometric handgrip, etc.) and how these interventions and experimental approaches have advanced our knowledge of cardiovascular, cardiometabolic, and other human diseases and conditions.


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